FH58 / FH58M Connectors Hirose Electric FH58 / FH58M Series Connectors maximize board space with a combination of a 0.2mm/0.25mm pitch and a narrow depth of 3.1mm. Chucking metal at both sides of the connector provides a high FPC retention force. This chucking metal allows the connector to accept horizontal FPC insertions and provides a clear, tactile click. The FH58 and FH58M Series connectors support high-speed transmission with excellent impedance characteristics.